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   <TITLE>prob016: traffic lights</TITLE>
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<H1>
prob016: traffic lights</H1></CENTER>

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<TD>proposed by&nbsp;</TD>

<TD ALIGN=LEFT><B><A HREF="http://www.cs.york.ac.uk/~tw">Toby Walsh</A></B>
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<A HREF="mailto:tw@cs.york.ac.uk">tw@cs.york.ac.uk</A></ADDRESS>
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<H3>
Overview</H3>
The problem description consists of:
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a problem <A HREF="spec.html">specification</A></LI>

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a list of <A HREF="refs.html">references</A></LI>

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a summary of <A HREF="results.html">results</A></LI>
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